Add note about login command (#130)

Author: agners

rootfs/usr/bin/cli.sh

@@ -8,7 +8,9 @@ while true; do
     COMMAND="$(rlwrap -S $'\e[32mha > \e[0m' -H /tmp/.cli_history -o cat)"
 
     # Abort to host?
-    if [ "$COMMAND" == "login" ]; then
+    if [ "$COMMAND" == "help" ]; then
+        echo "Note: Use \"login\" to enter operating system shell"
+    elif [ "$COMMAND" == "login" ]; then
         exit 10
     elif [ "$COMMAND" == "exit" ]; then
         exit